Home / 20,909.08-28,847.22-11,950.12

Finding the Fourth Proportional to 20,909.08, 28,847.22 and 11,950.12

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Solution

The fourth proportional to 20,909.08, 28,847.22 and 11,950.12 is: 16,486.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,909.08 : 28,847.22 = 11,950.12 : x
  2. Step 2: Convert to fraction form
    20,909.08/28,847.22 = 11,950.12/x
  3. Step 3: Cross multiply
    20,909.08x = 28,847.22 × 11,950.12
  4. Step 4: Simplify right side
    20,909.08x = 344,727,740.67
  5. Step 5: Solve for x
    x = 344,727,740.67/20,909.08
  6. Step 6: Final answer
    x = 16,486.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.